Electron shuttling capacity and greenhouse gas production of soils for three high-elevation wetlands at Niwot Ridge, 2024.

High-elevation wetlands are important indicators of how mountain ecosystems may respond to global climate change. These wetlands also act as locations of disproportionate biogeochemical processing on the landscape, but they remain relatively understudied compared to lowland wetlands. This study aimed to characterize redox-active organic matter (RAOM) reduction, a known key control on carbon cycling in high-latitude peatland ecosystems, to better understand biogeochemical cycling in high elevation wetlands and carbon greenhouse gas production at Niwot Ridge LTER. Soils were collected from three different types of wetlands, a subalpine wetland, a periglacial solifluction lobe, and an alpine wet meadow. Samples were incubated at a common temperature in the laboratory to measure RAOM reduction, carbon dioxide production, and methane production over 63-d. This dataset reports the electron shuttling values, a measure of RAOM reduction, and the greenhouse gas production over the incubation period.

高海拔湿地是表征山地生态系统响应全球气候变化过程的关键指示物。此类湿地在景观中承担着远超其面积占比的生物地球化学过程，但相较于低地湿地，相关研究仍较为匮乏。本研究旨在表征氧化还原活性有机质（Redox-Active Organic Matter, RAOM）的还原过程——这是高纬度泥炭地生态系统碳循环的已知关键调控因子——以深化对高海拔湿地生物地球化学循环以及尼沃特岭长期生态研究站（Niwot Ridge LTER）碳基温室气体产生机制的认知。研究人员从三类湿地中采集土壤样品，分别为亚高山湿地、冰缘泥流舌与高山湿草甸。将样品置于实验室恒温环境中培养63天，以测定RAOM还原速率、二氧化碳产生量与甲烷产生量。本数据集记录了培养周期内的电子穿梭值（RAOM还原过程的量化表征指标）以及温室气体产生量。